1x3的矩阵[x y z]等于三维旋转矩阵Rw乘以1x3的矩阵[Xc Yc Zc]加1x3的矩阵[Tx Ty Tz],用ceres求方程的最小二乘估计并输出残差 C++
时间: 2023-12-04 17:02:10 浏览: 184
好的,我理解了你的问题。这个问题可以使用Ceres库来求解。以下是解决该问题的代码示例:
```c++
#include <iostream>
#include "ceres/ceres.h"
#include "ceres/rotation.h"
using namespace std;
struct RotationResidual {
RotationResidual(double x, double y, double z, double Xc, double Yc, double Zc, double Tx, double Ty, double Tz)
: x_(x), y_(y), z_(z), Xc_(Xc), Yc_(Yc), Zc_(Zc), Tx_(Tx), Ty_(Ty), Tz_(Tz) {}
template <typename T>
bool operator()(const T* const Rw, const T* const Xc, const T* const Yc, const T* const Zc, const T* const Tx, const T* const Ty, const T* const Tz, T* residual) const {
T Xw = Rw[0] * T(Xc[0]) + Rw[1] * T(Yc[0]) + Rw[2] * T(Zc[0]) + T(Tx[0]);
T Yw = Rw[3] * T(Xc[0]) + Rw[4] * T(Yc[0]) + Rw[5] * T(Zc[0]) + T(Ty[0]);
T Zw = Rw[6] * T(Xc[0]) + Rw[7] * T(Yc[0]) + Rw[8] * T(Zc[0]) + T(Tz[0]);
residual[0] = T(x_) - Xw;
residual[1] = T(y_) - Yw;
residual[2] = T(z_) - Zw;
return true;
}
private:
const double x_;
const double y_;
const double z_;
const double Xc_;
const double Yc_;
const double Zc_;
const double Tx_;
const double Ty_;
const double Tz_;
};
int main(int argc, char** argv) {
double x = 1.0;
double y = 2.0;
double z = 3.0;
double Xc = 4.0;
double Yc = 5.0;
double Zc = 6.0;
double Tx = 7.0;
double Ty = 8.0;
double Tz = 9.0;
double Rw[9] = {1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0};
ceres::Problem problem;
problem.AddResidualBlock(
new ceres::AutoDiffCostFunction<RotationResidual, 3, 9, 1, 1, 1, 1, 1>(
new RotationResidual(x, y, z, Xc, Yc, Zc, Tx, Ty, Tz)),
nullptr,
&Xc, &Yc, &Zc, &Tx, &Ty, &Tz);
ceres::Solver::Options options;
options.linear_solver_type = ceres::DENSE_QR;
options.minimizer_progress_to_stdout = true;
ceres::Solver::Summary summary;
ceres::Solve(options, &problem, &summary);
cout << summary.BriefReport() << endl;
cout << "Rw: ";
for (int i = 0; i < 9; i++) {
cout << Rw[i] << " ";
}
cout << endl;
cout << "Xc: " << Xc << endl;
cout << "Yc: " << Yc << endl;
cout << "Zc: " << Zc << endl;
cout << "Tx: " << Tx << endl;
cout << "Ty: " << Ty << endl;
cout << "Tz: " << Tz << endl;
double residuals[3];
RotationResidual rotation_residual(x, y, z, Xc, Yc, Zc, Tx, Ty, Tz);
rotation_residual(Rw, &Xc, &Yc, &Zc, &Tx, &Ty, &Tz, residuals);
cout << "Residuals: " << residuals[0] << " " << residuals[1] << " " << residuals[2] << endl;
return 0;
}
```
这段代码定义了一个旋转残差结构体RotationResidual,该结构体的成员函数operator()计算了旋转方程的残差。在main函数中,我们使用ceres::Problem类将旋转残差添加到问题中,然后使用ceres::Solver类求解问题。最终,我们输出了旋转矩阵Rw和平移向量[Tx Ty Tz]的估计值,以及残差的计算结果。
注意:这段代码中的旋转矩阵Rw是固定的,如果需要对其进行调整,请修改Rw数组的值。
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